How can I handle a scenario where I need to update a read-only property in the JS script?

 In the context of Salesforce, you handle the scenario where you need to update a read-only property in a javascript object, by using the concept of property descriptors and object.defineProperty() or object.defineproperties().

Here is how you can do so:-

// Define the user object with a read-only email property

Let user = {

  Name: “John Doe”,

  Get email() {

    Return john.doe@example.com;

  }

};

// Attempt to modify the read-only email property

Try {

  User.email = newemail@example.com; // This will throw an error

} catch (error) {

  Console.error(“Error:”, error.message);

}

// Define a new writable email property using Object.defineProperty

Object.defineProperty(user, “email”, {

  Value: newemail@example.com,

  Writable: true,

  Enumerable: true,

  Configurable: true

});

Console.log(“Updated Email:”, user.email); // Outputs: Updated Email: newemail@example.com

Here is the example given in python programming:-

Class UserProfile:

    Def __init__(self, name, email):

        Self._name = name

        Self._email = email

    @property

    Def email(self):

        Return self._email

    @email.setter

    Def email(self, new_email):

        If hasattr(self, ‘_email’) and not hasattr(self, ‘_email_updated’):

            Self._email_updated = True

            Self._email = new_email

        Else:

            Raise AttributeError(“Cannot assign to read-only property ‘email’”)

# Creating an instance of UserProfile

User_profile = UserProfile(“John Doe”, john.doe@example.com)

# Trying to directly assign a new email (will raise an error)

Try:

    User_profile.email = newemail@example.com

Except AttributeError as e:

    Print(“Error:”, e)

# Updating email using setter method

User_profile.email = newemail@example.com

Print(“Updated Email:”, user_profile.email)  # Outputs: Updated Email: newemail@example.com

Here is the example given in HTML :-

    Document.getElementById(“updateEmailBtn”).addEventListener(“click”, function() {

      Var emailInput = document.getElementById(“email”);

      Var newEmail = prompt(“Enter new email:”);

      If (newEmail && newEmail !== “”) {

        emailInput.value = newEmail;

      }

    });

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